Examine source code of Summers Brightness

{
  "theme": {
    "images": {
      "theme_frame": "SummersBrightestH.jpg"
    },
    "colors": {
      "frame": "#f2e4e4",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Summers Brightness",
  "manifest_version": 2,
  "description": "abstract, bloom, blossoms, bright, floral, flowers, glitter, green, light, lily, pink, shine, sparkle, spring, stars, summer, butterfly, \t\n\nDesigned by MaDonna\n\nMy wallpaper to match is at: <a href=\"https://outgoing.prod.mozaws.net/v1/b7d93377522f3aac42005c3de5705d6d9467c8d510292d0d27591cbe1e117e99/http%3A//nature.desktopnexus.com/wallpaper/1085270/\" rel=\"nofollow\">http://nature.desktopnexus.com/wallpaper/1085270/</a>"
}